Got another problem now. Tested the 2 old switches againt the new ones and they work the same. Not the switches. Tested actuator motor with 9V battery and that seems to work OK.

I can lock the drivers door with key and all doors lock and unlock as they should. If I use the remote the other three doors lock and then unlock them selves straight away. Drivers door is non responsive using the key fob.

Only thing I can think of is a broken wire.

Anyone know the colour codes for the drivers side central locking wiring?

I still reckon switches - they often still read right on meter, but with current, they fail.

I've got 2 new switches here, I'll put them in later and see if it fixes the problem. The funny thing is the actuator started working again yesterday all day without a problem. Prior to that it was dead for days. So that rules out my broken wire theory.

Not really ,the broken wire theory is valid ,because it can make and brake contact randomly ,particularly if broke in the door shut loom , opening the door moves the broken wire , but the micro switches at the barrel are easy to replace (relatively speaking)

Do I have this correct.

If I open the door (separate the broken wire) then if I put a screw driver bar bit into the latch so the system thinks the door has been closed and press the door switch light button in and lock and unlock with the remote control it should in theory if its a broken wire, with the door fully open not lock and unlock hopefully if its a broken wire?

I will put new switches in this afternoon once the sun moves round. Just to rule the switches out.

Checking and repairing broken wire on the Omega front door is best done with the door removed as access to the loom in the flexi cover is shite to diabolical with the door in place... There's barely enough room to get the plug undone

If I open the door (separate the broken wire) then if I put a screw driver bar bit into the latch so the system thinks the door has been closed and press the door switch light button in and lock and unlock with the remote control it should in theory if its a broken wire, with the door fully open not lock and unlock hopefully if its a broken wire?

I will put new switches in this afternoon once the sun moves round. Just to rule the switches out.

No, opening the door may or may not separate the broken wire (IF it is a broken wire that is the problem) there are 36 wires in the loom ,in the rubber boot between the door loom plug and going into the A pillar I know this because i have a section of that loom from driver's door and just counted them

Checking and repairing broken wire on the Omega front door is best done with the door removed as access to the loom in the flexi cover is shite to diabolical with the door in place... There's barely enough room to get the plug undone

surely the pin switch in the door shuts also communicate with alarm ,which must communicate with central locking relay ,and therefore c/l motors by communicate i mean ,probably just receive a ground signal

removing the door , if that becomes necessary ,I undid the check strap bolt and removed it ,un-plugged the loom from the door ,then gripped the hinge pins with mole grips, gave them a couple of slaps with a hammer to pull them out worked a treat ,if you don't have h/p removal tool

but the door weighs a zillion kilo so if you can ,have blocks of wood and some carpet under the door to take the weight

Checking and repairing broken wire on the Omega front door is best done with the door removed as access to the loom in the flexi cover is shite to diabolical with the door in place... There's barely enough room to get the plug undone

Do you really want to remove the whole door to check for a broken wire? Really ?

I agree that the plug is difficult to undo but you've got to do that to get the door off. and I would be disconnecting the wiring, door stay and anything else in the door jam before even thinking about touching the hinge pins. I've got a door wiring loom to change on my car; the central locking intermittently operates erratically when the driver's door is moved, and so does the speaker(it's blown the original). This has got to be a wiring issue.

But it'll be the switches in the door motor, so lets not get overly excited.

Changed them, then had another problem a day later.

I would unlock the door with the remote and it would instantly re-lock itself. That went on for two days. I had to pull the door handle before it would re-lock, to get in and now for the last few days the problem has stopped by itself.